diff --git a/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4berry.dts b/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4berry.dts
index 0c91395e8..fd9e664e0 100644
--- a/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4berry.dts
+++ b/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4berry.dts
@@ -4,7 +4,7 @@
 	interrupt-parent = <0x1>;
 	#address-cells = <0x2>;
 	#size-cells = <0x2>;
-	model = "Bananapi M4Berry";
+	model = "Bananapi BPI-M4Berry";
 	compatible = "allwinner,h616", "arm,sun50iw9p1";
 
 	aliases {
diff --git a/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4zero.dts b/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4zero.dts
index 6761c287d..a43e15a89 100644
--- a/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4zero.dts
+++ b/arch/arm64/boot/dts/sunxi/sun50i-h616-bananapi-m4zero.dts
@@ -4,7 +4,7 @@
 	interrupt-parent = <0x1>;
 	#address-cells = <0x2>;
 	#size-cells = <0x2>;
-	model = "Bananapi M4Zero";
+	model = "Bananapi BPI-M4Zero";
 	compatible = "allwinner,h616", "arm,sun50iw9p1";
 
 	aliases {
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index 05933c065..b4526c9b1 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -24,6 +24,7 @@
 #include <linux/sched.h>
 #include <linux/smp.h>
 #include <linux/delay.h>
+#include <linux/sunxi-sid.h>
 
 /*
  * In case the boot CPU is hotpluggable, we record its initial state and
@@ -128,6 +129,10 @@ static int c_show(struct seq_file *m, void *v)
 {
 	int i, j;
 	bool compat = personality(current->personality) == PER_LINUX32;
+#if defined(CONFIG_BOARD_BANANAPI_M4BERRY) || defined(CONFIG_BOARD_BANANAPI_M4ZERO)
+        int databuf[4] = {0};
+        char tmpbuf[129] = {0};
+#endif
 
 	for_each_online_cpu(i) {
 		struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
@@ -179,6 +184,22 @@ static int c_show(struct seq_file *m, void *v)
 		seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
 	}
 
+#if defined(CONFIG_BOARD_BANANAPI_M4BERRY) || defined(CONFIG_BOARD_BANANAPI_M4ZERO)
+	/* platform */
+        sunxi_get_platform(tmpbuf, 129);
+        seq_printf(m, "CPU Platform\t: %s\n", tmpbuf);
+
+	/* chipid */
+        sunxi_get_soc_chipid((u8 *)databuf);
+        for (i = 0; i < 4; i++)
+                sprintf(tmpbuf + i*8, "%08x", databuf[i]);
+        tmpbuf[128] = 0;
+        seq_printf(m, "Serial\t\t: %s\n", tmpbuf);
+
+	seq_printf(m, "Hardware\t: %s\n", machine_name);
+	seq_printf(m, "Revision\t: %04x\n\n", system_rev);
+
+#endif
 	return 0;
 }
 
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index d98987b82..70725244e 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -56,6 +56,14 @@ static struct resource *standard_resources;
 
 phys_addr_t __fdt_pointer __initdata;
 
+#if defined(CONFIG_BOARD_BANANAPI_M4BERRY) || defined(CONFIG_BOARD_BANANAPI_M4ZERO)
+const char *machine_name = "Bananapi BPI Ref.";
+EXPORT_SYMBOL(machine_name);
+
+unsigned int system_rev = 0;
+EXPORT_SYMBOL(system_rev);
+#endif
+
 /*
  * Standard memory resources
  */
@@ -197,6 +205,16 @@ static void __init setup_machine_fdt(phys_addr_t dt_phys)
 
 	pr_info("Machine model: %s\n", name);
 	dump_stack_set_arch_desc("%s (DT)", name);
+
+	/* bpi */
+#if defined(CONFIG_BOARD_BANANAPI_M4BERRY) || defined(CONFIG_BOARD_BANANAPI_M4ZERO)
+	machine_name = name;
+	if (!strcmp(machine_name, "Bananapi BPI-M4Berry")) {
+		system_rev = 0x0002;
+	} else if (!strcmp(machine_name, "Bananapi BPI-M4Zero")) {
+		system_rev = 0x0003;
+	}
+#endif
 }
 
 static void __init request_standard_resources(void)
diff --git a/drivers/net/ethernet/allwinner/sunxi-gmac.c b/drivers/net/ethernet/allwinner/sunxi-gmac.c
index 26ceaaf56..2e4d75e79 100644
--- a/drivers/net/ethernet/allwinner/sunxi-gmac.c
+++ b/drivers/net/ethernet/allwinner/sunxi-gmac.c
@@ -1221,7 +1221,7 @@ out:
 
 static void geth_check_addr(struct net_device *ndev, unsigned char *mac)
 {
-	int i, j;
+	int i;
 	char *p = mac;
 	struct geth_priv *priv = netdev_priv(ndev);
 
diff --git a/drivers/net/phy/motorcomm.c b/drivers/net/phy/motorcomm.c
index 73b7bc5fb..923e776ce 100755
--- a/drivers/net/phy/motorcomm.c
+++ b/drivers/net/phy/motorcomm.c
@@ -84,7 +84,7 @@ static int link_mode_8614[4] = {0}; //0: no link; 1: utp; 32: fiber. traced that
 static unsigned int yt_mport_base_phy_addr = 0xff; //0xff: invalid; for 8618
 static unsigned int yt_mport_base_phy_addr_8614 = 0xff; //0xff: invalid;
 
-static int yt8511_config_out_125m(struct mii_bus *bus, int phy_id);
+int yt8511_config_out_125m(struct mii_bus *bus, int phy_id);
 static int ytphy_mii_wr_ext(struct mii_bus *bus, int phy_id, u32 regnum, u16 val);
 
 static int phy_yt8531_led_fixup(struct mii_bus *bus, int addr)
diff --git a/include/linux/sunxi-sid.h b/include/linux/sunxi-sid.h
index 4287cd737..1f1102909 100644
--- a/include/linux/sunxi-sid.h
+++ b/include/linux/sunxi-sid.h
@@ -91,4 +91,9 @@ int sunxi_soc_is_secure(void);
 s32 sunxi_get_platform(s8 *buf, s32 size);
 s32 sunxi_efuse_readn(s8 *key_name, void *buf, u32 n);
 
+#if defined(CONFIG_BOARD_BANANAPI_M4BERRY) || defined(CONFIG_BOARD_BANANAPI_M4ZERO)
+extern const char *machine_name;
+extern unsigned int system_rev;
+#endif
+
 #endif  /* __SUNXI_MACH_SUNXI_CHIP_H */